On Wed, 25 Nov 2020 08:46:17 -0800 (PST), Lawrence Milbourn wrote:

Ive just connected a tele with hdmi to a mini pc. It works well except
the picture overfills the screen. The pc is running windows 10 pro. I
can't find a way to decrease the size, any suggestions?

Dig through the TV's menu structure and turn off any "over scan"
feature.

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Cheers
Dave.